Calorimeter for flowing liquids or gases.



M; HOTTINGER.

GALORIMETER FOR PLOWING LIQUIDS 0R GASES.

AIPLIOATION FILED AUG.14, 1912. I

Patented Feb. 24, 1914.

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M. HOTTINGBR.

-GALORIMETBR FOR FLOWING LIQUIDS 0R GASES. A PPLIOATION rum; AUG. 14,1912.

1,088,280, Patented Feb. 24, 1914.

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MAX I-IOTTINGER, 0F WINTERTHUR, SWITZERLAND.

CALORIMETEB FOR FLOWING LIQUIDS OR nossaso.

1 0 aZZ whom it may concern Be it known that I, Max HOTTINGER,engineer,a citizen of the Republic of Switzerland, residing at 21Tachlisbrumenstrasse, .Vinterthur, Switzerland, have invented certainnew and useful Improvements in Calorimeters for Flowing Liquids orGases; and I do hereby declare the following to be a full, cl ear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to calorimeters for measuring and indicating thequantity of heat of a flowing liquid or gas and capable of beingutilized for indicating in hot water heating installations the quantityof heat driven off thereby, or by individual sections thereof.

According to this invention the device which contains an expanding bodyis so constructed that it gives the product of the quantity of fluidpassing through it and of the temperature of the fluid, and thusindicates directly the quantity of heat without necessitating anycalculation for the purpose.

Two constructions according to this invention are illustrated by way ofexample in the accompanying drawing.

Figure 1 is a vertical section through a device which indicates thequantity of heat of a passing liquid, and Fig. 2 is a similar view of adevice by means of which it is possible to determine the quantity ofheat given off by a particular branch or section of a heatinginstallation.

In the construction shown in Fig. 1, the casing 61 contains a liquidmeasuring device 6 through. which flows the medium whose quantity ofheat is to be measured on its way from the flow or supply branch 0 tothe return pipe (Z. The rotation of the water measuring wheel istransmitted by means of a toothed wheel or worm gear 6, which reducesits speed to the disk f. This disk in its turn engages a friction wheel9,, whereby its motion is transmitted to an indicating mechanism Itshown by way of example in the drawing in the form of a pointer h. Thefriction wheel 9 can be shifted on the disk f by means of a lever ipivoted at 72 to the casing and connected to the lever is a rod Zsecured at a suitable point, for instance in the branch 0 at m andpassing through a guide a.

Specification of Letters Patent.

Application filed August 14, 1912.

Patented Feb. 24., 1914..

Serial No. 715,008.

The rod Z, which may be hollow or solid, expands with the increase intemperature of the heating medium passing through the device, andcontracts when the temperature thereof falls. In that way, when thetemperature rises the friction wheel 9 is shifted by the lever 2' overthe disk f away from the axis of the latter, whereas when there is adecrease in temperature the friction wheel is brought nearer to theaxis.

Assuming the number of revolutions of the liquid measuring device toremain constant the friction wheel 9 and consequently the indicatingmechanism 71. will therefore be driven at a greater speed by the disk 9when the temperature increases, than when the temperature sinks. As thespeed of the disk 9 depends on the quantity of water passing through,the pointer it will accordingly indicate directly the quantity of heatcorresponding to the product of the quantity of water and thetemperature of the water.

If the heat measuring device above described is to be used forascertaining the quantity of heat consumed in a given section of a hotwater heating installation, for instance in a single floor of house, onedevice of the kind described is inserted into the hot water supply pipeand a second device of the same kind is arranged in the return ordischarge pipe of the heating section in question, and the quantity ofheat consumed is ascertained by comparing the heat contained in thewater supplied, with the heat still remaining in the water discharged.The two devices may in that case be combined in one, controlled partlyby the wa ter supplied, and partly by the water dis charged andindicating directly the difierence in the quantities of heat. A deviceof the latter kind is illustrated in Fig. 2. The arrangement is on thewhole similar to that shown in Fig. 1, only the lever 71 is controlledby two heat expansion bars Z, Z, one of which Z is arranged in thesupply pipe 0 and the other one Z" in the return pipe 0. The expansionbar Z is pivoted to the lever c at 7", while the bar Z is pivoted to thelever at 8. If, assuming the same quantity of Water is passing through,there is an increase in the temperature difference between the water inthe supply pipe 0 and in the return pipe 0, the bar Z willexpand morethan the bar Z, or it will contract less than the bar 1 or it willexpand while the bar Z will con- 2 V V p 1,088,280

before. v

In the case of a decrease in the difference in temperatures between thecontents of the pipes of. and c the rev erse will take place. Theindicating mechanism will therefore show not only the quantity of waterpassing :through, but also the quantity of heat- (corresponding to theproduct of the said quantity of water and of the difference in thetemperatures of 0 and c)eonsumed in the particular section of theheating installation. Should the temperature 1n 6 and 0 increaseancldecrease to the same-extent, and

in that way the difference in temperatures remains the same, the bars Zand Z will expand or contract uniformly and 1n the same direction, sothat the pivot points a and s i will be jointly shifted to the right orto the left. There will then take place a parallel shifting of the lever2', which however will be so slight owing to the small difference inlength of the heat expansion bars, that the shifting of the frictionwheel 9 produced thereby, will be of no practical importance. lVhenhowever the pivot points 7* and .s 'are shifted unequally the frictionwheel 9 will be appreciably moved owing to the magnifying effect of thelever 73.

Claims.

1. A calorimeter for fluids comprising a motor adapted to be actuated bythe fluid passing through the calorimeter, an indicating device,gearingdisposed between said motor and indicating device and comprisinga shiftable element, a longitudinally expansible member in directcontact with the fluid passing throughthe calorimeter, and

' connections between said member and said ing a shiftable element, alongitudinally expansible'member in direct contact with the -fiuidpassing through the calorimeter, and a pivoted lever connected at oneend to said expansible member and at the other end to said shiftableelement of the gearing whereto the indicator h with greater speed thanbythe longitudinal movement of the expansible member changes the ratio ofthe gearing by shifting said element.

3. A calorimeter for fluids comprising a motor adapted to be actuated bythe fluid passing through the calorimeter, an indicating device, gearingdisposed between said motor and indicating device and comprising ashiftable element, a longitudinally expansible member in direct contactwith the fluid passing through the calorimeter, a lever pivoted near oneend and connected at the extremity of its long arm to said shiftableelement of the gearing and at the extremity of its short arm to saidexpansible member whereby slight longitudinal movements of theexpansible member produce immediate shifting of said element of thegearing to thereby change the ratio of the gearing.

4. A calorimeter for fluids comprising a motor adapted to be actuated bythe fluid passing through the calorimeter, an indicating device, gearingdisposed between said motor and indicating device and comprisingfriction disks, the peripheral edge of the driven disk being in contactwith the face of the driving disk, a longitudinally expansible member indirect contact with the fluid passing through the calorimeter, and adirect mechanical connection between said expansible member and saiddriven disk whereby longitudinal movements of said expansible memberproduce a shifting movement of the driven disk over the face of thedriving disk.

5. A calorimeter for fluids comprising a motor adapted to be actuated bythe fluid passing through the calorimeter, an indicating device, gearingdisposed between said motor and indicating device and con'iprising ashiftable element, a longitudinally expansible member in direct contactwith a portion of the fluid passing through the calorimeter, a directmechanical connection between said meiuber and said shiftable element ofthe gearing, a second longitudinally expansible member subjected to asecond and separate portion of the fluid passing through the calorimeterand also connected to said direct mechanical connection between thefirst expansible member and the shiftable element of the gearing wherebythe differential expansion of said members produces a shifting of saidelement of the gearing.

In testimonywhereof I have affixed my signature, in presence of twowitnesses.

M. HOTTINGER. Vitnesses:

HARRY A. MCBRIDE, AUGUST Runes.

1 Copies of this. patent maybe obtained for five cents each, byaddressing the Commissioner of Patents, r 7 Washington, I). C.

